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April Weather in New Haven, United States

Last updated: June 24, 2025

In April, the average temperature in New Haven, United States hovers around 8°C (46°F). While you may experience minimums dipping to -7°C (20°F), the maximum can soar to a balmy 28°C (83°F). Expect precipitation totaling 89 mm (3.5 in) over approximately 13 days, contributing to an average humidity level of 86%.

April Temperature in New Haven

In April in New Haven, the average temperature is 8°C (46°F). Maximums can reach 28°C (83°F), while minimums can drop as low as -7°C (20°F). Pack accordingly to enjoy a variety of outdoor activities in the fluctuating temperatures!

April Weather in New Haven: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in New Haven, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In New Haven, April typically has an average temperature of 8°C (46°F), with highs reaching up to 28°C (83°F) and lows dropping to around -7°C (20°F).
JanFebMarAprMayJunJulAugSepOctNovDec252736465970747265533832
Data source: Temperature data for New Haven generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in New Haven

In New Haven in April, the precipitation amount is 89 mm (3.5 in) distributed over 13 days.

April Precipitation Trends in New Haven

The chart displays monthly precipitation patterns in New Haven, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In New Haven, April typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec626563891151157172941126358
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in New Haven

In New Haven in April humidity is 86%. With an average temperature of 8°C (46°F), this humidity feels like a damp chill enveloping you, making outdoor activities less enjoyable and requiring extra layers to stay comfortable while exploring.

April Average Humidity in New Haven

This chart illustrates the average monthly humidity levels in New Haven, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in New Haven is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%85%86%80%80%80%81%80%84%90%86%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in New Haven

In New Haven in April, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in New Haven.

Maximum UV Index Levels in New Haven for April

The chart shows the monthly maximum UV Index (UVI) for New Haven in April, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In April, the maximum UV index in New Haven typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24589101097532
Data source: New Haven April UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How April Weather in New Haven Compares to Other Months

Weather in New Haven varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in New Haven, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in New Haven, showing how April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)62 mm (2.4 inches)88%low
February Weather-3°C (27°F)65 mm (2.6 inches)87%moderate
March Weather2°C (36°F)63 mm (2.5 inches)85%moderate
April Weather8°C (46°F)89 mm (3.5 inches)86%very high
May Weather15°C (60°F)115 mm (4.5 inches)80%very high
June Weather21°C (70°F)115 mm (4.5 inches)80%very high
July Weather24°C (75°F)71 mm (2.8 inches)80%very high
August Weather22°C (72°F)72 mm (2.8 inches)80%very high
September Weather18°C (65°F)94 mm (3.7 inches)80%high
October Weather12°C (53°F)112 mm (4.4 inches)84%moderate
November Weather3°C (38°F)63 mm (2.5 inches)89%moderate
December Weather0°C (32°F)58 mm (2.3 inches)86%low

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